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authorMichal Simek <michal.simek@xilinx.com>2014-02-12 17:41:23 +0400
committerWim Van Sebroeck <wim@iguana.be>2014-03-31 15:29:25 +0400
commita8b84b01e4af2baad3cef46bc86dcb2718c79e72 (patch)
tree1cd214b367550b1fcf842024835bd4c16f6e20a5 /Documentation
parent75b3c5a827de11620f9bf7cbd6c3e4208bd3ddf5 (diff)
downloadlinux-a8b84b01e4af2baad3cef46bc86dcb2718c79e72.tar.xz
watchdog: xilinx: Add missing binding
Document current driver binding. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt23
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diff --git a/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
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+Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
+---------------------------------------------------------
+
+Required properties:
+- compatible : Should be "xlnx,xps-timebase-wdt-1.00.a" or
+ "xlnx,xps-timebase-wdt-1.01.a".
+- reg : Physical base address and size
+
+Optional properties:
+- clock-frequency : Frequency of clock in Hz
+- xlnx,wdt-enable-once : 0 - Watchdog can be restarted
+ 1 - Watchdog can be enabled just once
+- xlnx,wdt-interval : Watchdog timeout interval in 2^<val> clock cycles,
+ <val> is integer from 8 to 31.
+
+Example:
+axi-timebase-wdt@40100000 {
+ clock-frequency = <50000000>;
+ compatible = "xlnx,xps-timebase-wdt-1.00.a";
+ reg = <0x40100000 0x10000>;
+ xlnx,wdt-enable-once = <0x0>;
+ xlnx,wdt-interval = <0x1b>;
+} ;